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Finding the Fourth Proportional to 509,976.45, 765,131.10 and 243,757.71

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Solution

The fourth proportional to 509,976.45, 765,131.10 and 243,757.71 is: 365,716.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,976.45 : 765,131.10 = 243,757.71 : x
  2. Step 2: Convert to fraction form
    509,976.45/765,131.10 = 243,757.71/x
  3. Step 3: Cross multiply
    509,976.45x = 765,131.10 × 243,757.71
  4. Step 4: Simplify right side
    509,976.45x = 186,506,604,785.78
  5. Step 5: Solve for x
    x = 186,506,604,785.78/509,976.45
  6. Step 6: Final answer
    x = 365,716.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.